Improve the breeding plan. Cattle herds are always in a dynamic updating state, and some eliminated adult cows are replaced by newly born calves. Calves are not a complete replacement for cows. Some calves are raised as breeding cows and grow up to be either breeding cows or commercial cows, so the structure of the herd is constantly changing. At a certain stage, when the structure of the herd changes, it is the turnover period of the herd. Develop a turnover plan during the turnover period, including feeding, breeding, infrastructure construction, and B-ultrasound inspection of BCF cattle imported by Boxiang. Through targeted regulation of the herd structure, stabilize the structural changes of the herd and make changes towards the direction required by the farm.

Large scale dairy farms require strong management and breeding to increase the frequency of cow reproduction. The specific method is to control the number of empty days of cows in the cattle farm between 2-3 months, accelerate the breeding frequency, and try to use instruments (such as B-ultrasound for cows) for identification.

Reduce the renewal rate of adult cows and adjust the renewal parity of adult cows. The update rate of adult cows is the ratio of the number of dead, eliminated, and sold cows within the year to the number of adult cows in the annual memory column. In the production process, one is to control the number of young cows in the herd and reduce the number of breeding cows; The second is to reduce the renewal rate of adult cows and adjust the renewal parity of adult cows.

Increase the elimination rate. The number of cattle herds has always been an important indicator for large-scale cattle farms, and they generally do not actively eliminate them, which leads to a lack of improvement in their quality. Therefore, it is necessary to change this concept and eliminate cows with poor reproductive ability or reproductive diseases, and conduct timely imported BCF cattle B-ultrasound examination after breeding. Generally speaking, if a cow's fasting period exceeds 140 days, there is a problem that needs to be solved. If it cannot be solved, it should be eliminated to ensure the economic benefits of the cow's production.